radio fluorescence

例句：

1. 1. The scientist discovered a new type of radioactive material that could be used for medical imaging.
   科学家发现了一种可用于医学成像的新放射性物质。
2. 2.The radiation from the sun is responsible for the fluorescence in the sky during the day.
   太阳的辐射是白天天空荧光的原因。
3. 3.The research team focused on studying the effects of radioactive materials on the environment.
   研究小组专注于研究放射性材料对环境的影响。